Neill Williams, MD
NPI 1285770776 · Psychiatry Physician · Washington, DC
Neill Williams, MD is a Psychiatry Physician provider in Washington, DC (NPI 1285770776).
Provider details
- NPI number
- 1285770776
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD 30135 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 34 |
| Bupropion Hclbrand: Bupropion Xl | 34 |
| Zolpidem Tartrate | 25 |
| Vortioxetine Hydrobromidebrand: Trintellix | 21 |
| Gabapentin | 18 |
| Alprazolam | 17 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 16 |
| Trazodone Hcl | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2012-09-14
Frequently asked questions
- What is Neill Williams's NPI number?
- Neill Williams's National Provider Identifier (NPI) is 1285770776, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Neill Williams's specialty?
- Neill Williams is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Neill Williams located?
- Neill Williams's practice location on file with NPPES is 1330 New Hampshire Ave Nw, Washington, DC 20036-6350.
- What is Neill Williams's phone number?
- The practice phone number listed in the NPPES registry for Neill Williams is (202) 293-0204.
- Is Neill Williams's NPI active?
- Yes — Neill Williams's NPI (1285770776) is active in the NPPES registry as of the last update on 2012-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.